The Hajar Mountains parallel the east coast of the UAE. At their highest point in the north, in the Musandam Peninsula, they reach a height of 2000 metres. There the mountain slopes drop directly into the sea. This area is known locally as the Ruus Al-Jibal, literally the heads of the mountains. The Ruus Al-Jibal exposes the thick sequence of Mesozoic carbonates of the Arabian Platform which correlates with the principal oil bearing strata that lie deeply buried to the west.